make sure SignalingRelay#close() works even when called from ondata (I don't think this comes up currently, but just in case that class gets used elsewhere...)
make sure SignalingRelay#close() works even when called from ondata (I
don't think this comes up currently, but just in case that class gets
used elsewhere...)

wdebeaum/svg-whiteboard,wdebeaum/svg-whiteboard